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MAX1203AEAP+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
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For small orders, phone 1-800-835-8769.
General Description
The MAX1202/MAX1203 are 12-bit data-acquisition
systems specifically designed for use in applications
with mixed +5V (analog) and +3V (digital) supply volt-
ages. They operate with a single +5V analog supply or
dual ±5V analog supplies, and combine an 8-channel
multiplexer, high-bandwidth track/hold, and serial inter-
face with high conversion speed and low power con-
sumption.
A 4-wire serial interface connects directly to
SPI™/MICROWIRE™ devices without external logic,
and a serial strobe output allows direct connection to
TMS320-family digital signal processors. The
MAX1202/MAX1203 use either the internal clock or an
external serial-interface clock to perform successive-
approximation analog-to-digital conversions. The serial
interface operates at up to 2MHz.
The MAX1202 features an internal 4.096V reference,
while the MAX1203 requires an external reference. Both
parts have a reference-buffer amplifier that simplifies
gain trim. They also have a VL pin that is the power
supply for the digital outputs. Output logic levels (3V,
3.3V, or 5V) are determined by the value of the voltage
applied to this pin.
These devices provide a hard-wired SHDN pin and two
software-selectable power-down modes. Accessing the
serial interface automatically powers up the devices. A
quick turn-on time enables the MAX1202/MAX1203 to
be shut down between conversions, allowing the user
to optimize supply currents. By customizing power-
down between conversions, supply current can drop
below 10µA at reduced sampling rates.
The MAX1202/MAX1203 are available in 20-pin SSOP
and DIP packages, and are specified for the commer-
cial, extended, and military temperature ranges.
Applications
5V/3V Mixed-Supply Systems
Data Acquisition
High-Accuracy Process Control
Battery-Powered Instruments
Medical Instruments
Features
♦ 8-Channel Single-Ended or 4-Channel
Differential Inputs
♦ Operates from Single +5V or Dual ±5V Supplies
♦ User-Adjustable Output Logic Levels
(2.7V to 5.25V)
♦ Low Power: 1.5mA (operating mode)
2µA (power-down mode)
♦ Internal Track/Hold, 133kHz Sampling Rate
♦ Internal 4.096V Reference (MAX1202)
♦ SPI/MICROWIRE/TMS320-Compatible
4-Wire Serial Interface
♦ Software-Configurable Unipolar/Bipolar Inputs
♦ 20-Pin DIP/SSOP
MAX1202/MAX1203
5V, 8-Channel, Serial, 12-Bit ADCs
with 3V Digital Interface
________________________________________________________________
Maxim Integrated Products
1
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
TOP VIEW
DIP/SSOP
V
DD
SCLK
CS
DIN
SSTRB
DOUT
VL
GND
REFADJ
REF
SHDN
V
SS
CH7
CH6
CH5
CH4
CH3
CH2
CH1
CH0
MAX1202
MAX1203
Pin Configuration
19-1173; Rev 2; 5/98
EVALUATION KIT
AVAILABLE
Typical Operating Circuit appears at end of data sheet.
SPI is a registered trademark of Motorola, Inc.
MICROWIRE is a registered trademark of National
Semiconductor Corp.
Ordering Information continued at end of data sheet.
*
Dice are specified at T
A
= +25°C, DC parameters only.
±1Dice*0°C to +70°CMAX1202BC/D
MAX1202BCAP
MAX1202ACAP
MAX1202BCPP
MAX1202ACPP
PART TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C 20 SSOP
20 SSOP
20 Plastic DIP
20 Plastic DIP
PIN-PACKAGE
INL
(LSB)
±1/2
±1
±1/2
±1
Ordering Information
MAX1202/MAX1203
5V, 8-Channel, Serial, 12-Bit ADCs
with 3V Digital Interface
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND ................................................................-0.3V to 6V
VL ...............................................................-0.3V to (V
DD
+ 0.3V)
V
SS
to GND.................................................................0.3V to -6V
V
DD
to V
SS
................................................................-0.3V to 12V
CH0–CH7 to GND............................(V
SS
- 0.3V) to (V
DD
+ 0.3V)
CH0–CH7 Total Input Current...........................................±20mA
REF to GND................................................-0.3V to (V
DD
+ 0.3V)
REFADJ to GND.........................................-0.3V to (V
DD
+ 0.3V)
Digital Inputs to GND .................................-0.3V to (V
DD
+ 0.3V)
Digital Outputs to GND.................................-0.3V to (VL + 0.3V)
Digital Output Sink Current.................................................25mA
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 11.11mW/°C above +70°C) ...........889mW
SSOP (derate 8.00mW/°C above +70°C) .....................640mW
CERDIP (derate 11.11mW°C above +70°C).................889mW
Operating Temperature Ranges
MAX1202_C_P/MAX1203_C_P............................0°C to +70°C
MAX1202_E_P/MAX1203_E_P..........................-40°C to +85°C
MAX1202BMJP/MAX1203BMJP.....................-55°C to +125°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
ELECTRICAL CHARACTERISTICS
(V
DD
= +5V ±5%, VL = 2.7V to 3.6V; V
SS
= 0V or -5V ±5%; f
SCLK
= 2.0MHz, external clock (50% duty cycle); 15 clocks/conversion
cycle (133ksps); MAX1202—4.7µF capacitor at REF pin; MAX1203—external reference, V
REF
= 4.096V applied to REF pin;
T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
-3dB rolloff MHz4.5
MAX1202A/MAX1203A
Small-Signal Bandwidth
kHz800
V
IN
= 4.096Vp-p, 65kHz (Note 4)
External reference, 4.096V
MAX1202B/MAX1203B
No missing codes over temperature
CONDITIONS
Full-Power Bandwidth
±3MAX1202 (all grades)
dB-85Channel-to-Channel Crosstalk
dB80SFDRSpurious-Free Dynamic Range
dB-80THD
Total Harmonic Distortion
(up to the 5th harmonic)
dB70SINADSignal-to-Noise + Distortion Ratio
LSB
±0.5
INLRelative Accuracy (Note 2)
Bits12Resolution
LSB±0.1
Channel-to-Channel
Offset Matching
ppm/°C±0.8Gain Temperature Coefficient
±1.0
LSB±1.0DNLDifferential Nonlinearity
UNITSMIN TYP MAXSYMBOLPARAMETER
LSB±3.0Offset Error
±1.5 LSB
±3
Gain Error (Note 3)
External reference, 4.096V
MAX1203A
MAX1203B
DC ACCURACY (Note 1)
DYNAMIC SPECIFICATIONS (10kHz sine-wave input, 4.096Vp-p, 133ksps, 2.0MHz external clock, bipolar-input mode)
MAX1202/MAX1203
5V, 8-Channel, Serial, 12-Bit ADCs
with 3V Digital Interface
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +5V ±5%, VL = 2.7V to 3.6V; V
SS
= 0V or -5V ±5%; f
SCLK
= 2.0MHz, external clock (50% duty cycle); 15 clocks/conversion
cycle (133ksps); MAX1202—4.7µF capacitor at REF pin; MAX1203—external reference, V
REF
= 4.096V applied to REF pin;
T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
MAX1202AC
T
A
= +25°C
External clock, 2MHz, 12 clocks/conversion
(Note 6)
On/off leakage current, V
CH_
= ±5V
Bipolar, V
SS
= -5V
Unipolar, V
SS
= 0V
6
Used for data transfer only
Internal compensation mode (Note 6)
Internal clock
MAX1202AE
External compensation mode
External compensation mode, 4.7µF
±30 ±60
CONDITIONS
ppm/°C
±30 ±50
V
REF
Temperature Coefficient
mA30REF Short-Circuit Current
V4.076 4.096 4.116REF Output Voltage
pF16Input Capacitance
µA±0.01 ±1Multiplexer Leakage Current
±V
REF
/2
4.7
V
V
REF
Input Voltage Range, Single-
Ended and Differential (Note 7)
0 2.0
±30
0.1 0.4
MAX1202B
µF
MHz
0.1 2.0
External Clock Frequency Range
MHz1.7Internal Clock Frequency
0.01
0mA to 0.5mA output load mV2.5Load Regulation (Note 8)
ns10Aperture Delay
µs1.5t
ACQ
Track/Hold Acquisition Time
µs
5.5 10
t
CONV
Conversion Time (Note 5)
Internal compensation mode
µF
0
Capacitive Bypass at REF
Capacitive Bypass at REFADJ
UNITSMIN TYP MAXSYMBOLPARAMETER
ps
%±1.5REFADJ Adjustment Range
V
2.50 V
DD
+
50mV
Input Voltage Range
µA200 350Input Current
kΩ
12 20Input Resistance
SHDN = 0V
µA1.5 10REF Input Current in Shutdown
V
V
DD
-
50mV
REFADJ Buffer Disable Threshold
<50Aperture Jitter
CONVERSION RATE
INTERNAL REFERENCE (MAX1202 only, reference-buffer enabled)
ANALOG INPUT
EXTERNAL REFERENCE AT REF (Reference buffer disabled, V
REF
= 4.096V)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

MAX1203AEAP+T

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Buy MAX1203AEAP+T
Manufacturer:
Maxim Integrated
Description:
Analog to Digital Converters - ADC 12-Bit 8Ch 133ksps 5V Precision ADC
Lifecycle:
New from this manufacturer.
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